GB/T19001:2016/ISO9001:2015
ISO45001:2018
GB/T24001-2016/ISO14001:2015
环境管理体系认证证书
建筑业企业资质证书-正本
建筑业企业资质证书-副本
实用新型专利证书
职业健康安全管理体系认证证书
质量安全体系认证证书
实用新型专利证书
Mechanical-electrical installation project specialized contracting Grade II
ISO9001 quality management system certification
Environmental management system certification
Occupational health and safety management system certification